Over the last few years, LED systems have led to debate in the growroom. The fundamental issue: Do they really work? LED lighting undoubtedly deliver on power savings and produce less heat compared to high-pressure sodium and metal-halide lamps (click on the link for an in-depth review of LED Grow Lights), however the majority of seasoned gardeners continue to be unconvinced. Perhaps the LED setup at Rocky Mountain High dispensary in Denver, Colorado will reform a handful of hearts. Chief growing publisher Danny Danko check outs this outstanding LED operation.